RC14JB330R Equivalent & Substitute Parts

Part Overview

The RC14JB330R is a 330 Ohm ±5% 1/4W axial through-hole resistor manufactured by Stackpole Electronics Inc. This carbon composition resistor features non-inductive and pulse withstanding characteristics, designed for applications requiring reliable performance across the -55°C to 125°C operating temperature range. The product is currently obsolete, making equivalent substitutes necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

RC14JB330R

Stackpole Electronics IncIn Stock: 1128RC14JB330R Datasheet

Current PartRFQ

ASRM12JB330R

Stackpole Electronics IncIn Stock: 1063ASRM12JB330R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC14JB330R is determined by the following critical parameters:

Electrical Compatibility:

• Resistance value must be 330 Ohms
• Tolerance must be ±5% or tighter
• Power rating must be equal to or greater than 0.25W

Mechanical Compatibility:

• Package type must be Axial through-hole
• Physical dimensions must accommodate existing PCB layouts and component spacing

Environmental & Compliance:

• Operating temperature range must encompass or exceed -55°C ~ 125°C
• RoHS3 compliance required for modern applications
• Pulse withstanding capability must be maintained

The ASRM12JB330R meets all substitution criteria while offering enhanced specifications in power rating and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JB330R is the direct substitute for the obsolete RC14JB330R. Selection is based on the following engineering factors:

Electrical Performance: Both parts maintain identical resistance and tolerance specifications, ensuring drop-in compatibility for circuit function.

Power Margin: The ASRM12JB330R provides double the power rating (0.5W vs. 0.25W), offering improved thermal headroom and reliability in applications where the original 1/4W rating was marginal.

Temperature Range: The extended operating temperature range (-55°C ~ 155°C vs. -55°C ~ 125°C) provides additional operational margin for demanding environments.

Product Status: The ASRM12JB330R is active production, ensuring long-term availability and supply chain continuity compared to the obsolete RC14JB330R.

Compliance: Both parts maintain pulse withstanding capability and safety features required for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JB330R directly replace the RC14JB330R in existing designs?

A: Yes. Both parts share identical resistance (330 Ohms) and tolerance (±5%) specifications. The axial package type is identical, and the ASRM12JB330R's higher power rating and extended temperature range provide enhanced performance margins without circuit modification.

Q: What is the difference between carbon composition and metal film construction?

A: The RC14JB330R uses carbon composition construction, while the ASRM12JB330R uses metal film construction. Metal film resistors typically offer better stability, lower noise, and tighter tolerance control. Both constructions maintain the required pulse withstanding and non-inductive characteristics for this application.

Q: Are there any physical dimension concerns when substituting?

A: The ASRM12JB330R is slightly larger (0.118" Dia x 0.354" L vs. 0.094" Dia x 0.248" L). Verify that PCB layout and component spacing accommodate the larger axial package before implementation.

Q: Why is the RC14JB330R obsolete?

A: The RC14JB330R has been discontinued by the manufacturer. The ASRM12JB330R represents the current active production equivalent from the same manufacturer, ensuring continued availability and support.

Q: Does the ASRM12JB330R meet RoHS compliance requirements?

A: The RC14JB330R is confirmed ROHS3 compliant. RoHS status for the ASRM12JB330R should be verified with the manufacturer or distributor for specific application requirements.